Embroidering-machine.



K. EGGART. EMBROIDERING MAcHmE. APPLICATION FILED FEB. 3. 1914.'

LWQ?. 1316111611 Dec. 12,1916.

v www KARL EGGART, OF ARBON, SWITZERLAND, ASSIGNOR TO THE FIRMA ADOLPH SAURER,

OF ARBON, SWITZERLAND.

EMBROIDERINGJVIACI-IINE.

Application le. February 3, 1914.

'broidering machines, although its use is not necessarily limited thereto. Work frames of embroidering machines have been suspended heretofore upon interconnected levers, but in such eases the levers remote from the jacquard end of the machine have been connected to the lever which is directly acted upon by the jacquard or automat by a single tension member or at least by a tension member which acts only in one direction, namely against the weight of the work frame, the various parts which have been moved upwardly through the pull of the tension member moving in the opposite direction under the influence only of the weight of the work frame. It has been found, however, that when embroidering machines provided with such frame suspension are operated at high speed there is more or less lack of absolute uniformity in the movements of the several suspension levers and that the movement of the frame and therefore the quality of the work produced are unfavorably influenced thereby. In accordance with the present invention provision is made whereby movement of the levers directly actuated by the jacquard or automat in both directions, up and down, is imparted through tension members to all of the suspension levers, so that all of such levers and therefore all parts of the work frame are moved positively in both directions, even at high speeds, and greater uniformity in the quality of the work is attained.

The invention will be more fully explained hereinafter with reference to the accompanying drawing in which a convenient embodiment of the invention is illustrated by way of example and in which the single ligure is a view in front elevation of the frame of an embroidering machine with its Specification of Letters Patent.

Patented Dec. 12, 1916.

serial No. 816,146.

work frame, suspension levers and connections to the jacquard or automat.

The jacquard or automat, indicated gcnerally at 1, is shown as having a shaft 2 provided with a bevel gear 3 which meshes with a bevel pinion 5 on a vertical screw shaft 4 supported at its upper end in a bracket 9. On the screw shaft is a traveling sleeve or nut 6 which engages a rod 7 pivotally connected at its upper end to a suspension lever 10 which is pivotally mounted at 11 on the machine frame 8, and to the horizontal arm of a threearmed lever 12 which is pivotally mounted at 13 on the machine frame 8. The upper arm of the three-armed lever 12 is connected by a tension member 14 with the bell crank suspension levers 15 (one or more) suitably distributed and supported upon the machine frame. The lower arm of the threearmed lever 12 is connected by a tension member 16 with the vertical arm of a bell crank lever 17 which is pivotally mounted on the machine frame, the horizontal arm of the lever 17 being connected by a tension member 18 with the horizontal arm of one of the suspension levers 15. The tension members 14 and 16 may be supported at intermediate points, as at 19, 20 and 21, to prevent sagging.

ln the construction shown the weight of the work frame is counter-balanced by a counter-balance weight 22 which may be hung upon the lever 10 and through which the levers 10 and 12 may also be connected, as shown in the drawing.

The jacquard or automat moves the levers 10 and 12, to which it is directly connected in the manner shown, or in any other suitable manner, the lever 12 being provided. as a matter of mechanical convenience. Movement ofthe levers 10 and 12 in a direction to raise the work frame 23 is im parted through the lever 12 and the tension member 14 to the suspension levers 15, while movement of the levers 10 and 12 in a direction to lower the work frame 23 is imparted to the suspension levers 15 through the lever 12, the tension member 16, the lever 17 and the tension member 18, the several suspension levers 15 being connected by the tension member 14 to move together whether the origin of motion is at one end of the series or at the other end. It will therefore be seen that the actuation of the jacquard or automat,'in either directiomup ordo\vn', is imparted directlyY and `positiv'elyto allfoi' the suspension levers of the Work frame A so that all of `such' suspension levers and therefore all parts of the frame have precisely'the sameV movement and the'quality of the Work produced will be the same through-` Y out theV length ofthe Work frame.

It Will be obvious that the counter-balancing'of the Work frame may be effected other-Y Yvviserthan as shown in the drawing, and in l Letters lPatent of the LUnited States No.

1,123,504, dated January 5, 1915, there is shown and described a similarV connection Vof the suspension VVlevers through tensionV membersV acting inboth directions in Which the rame'is counter-balanced by a spring.

v It Will also be understood that the suspensuspension levers mounted on the machine frame andV directly supporting the Working frame, a multiple armed actuating lever mounted on the machine frame,`andtension members directly connecting the arms of the actuatingleverto the suspension levers for movement in both directions.

2. In an embroideringmachine, the com- Copies of this patent may be'obtained for bination of a machine frame, a Work frame, a bell crank suspension lever mounted on the machine frame, a bell crank transmitting lever also mounted on the machine frame, a connection between one arm of the transmitting lever and one aiin of the suspension lever, a multiple armed actuating lever mounted on the machine frame, a tension member connectingb one arm of the actuating lever with another arm of said suspension lever, and a tension member connecting Jthe other arm of the actuating lever With the other arm of the transmitting lever.

3. In an embroidering machine, the comhina-tion of a machine frame, a work iframe, suspension levers mounted on the machine frame, a multiple armed actuating lever mounted on the machine frame, tension members connecting the arms of the actuat- 'ing lever with the suspension levers for movement in both directions, and an automat directly connected to the ac-tuatm` lever.

lil

This specification signed and witnessed Signed in the presence of- EUGENE NABEE, D. I. MURPHY.

ve cents each, by addressing the Commissioner o1 Patents,

Washington, I). C. 

